Sharp JW-20CM User Manual

Page 154

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9

·

56

In the case of a master station (PC 00)

· Communication monitor flag

This flag is used to monitor the communication condition with other stations. Non-connected

station keeps this flag as “OFF.”

The master station periodically executes communication recovery operation with the

communication error slave station. When the error situation is recovered, the master station

returns to normal communication.

· Operation condition monitor flag [1]

This flag is used to monitor the operation condition of slave stations when the communication

with each slave station is normal.

Non-connected station keeps this flag as “OFF.”

Even if a master station PC has stopped operation normally or by an error, the JW-20CM

turns “ON” this flag while communicating.

Flag

Improper setting of parameter, BCC check error, or other errors.

When the link start switch is set to “00

(H)

.”

Condition for flag operation

Own

station

flag

(master

station)

When the link start switch is set to “01

(H)

,” and the master station is operating

normally.

Flag operation

ON

OFF

Communication monitor flag (1) of the master
station is turned “OFF.”

Flag

Condition for flag operation

Flag operation

Other

station’s

flag

(01 to 77)

Stopped communication or unable to
communicate with slave stations.

Specific

slave

station

All slave stations

ON

Normal communication with slave stations.

OFF

Flag

Flag operation

Communication monitor flag (1) of the master station is turned “ON.”

Communication monitor flag (1) of the master station is turned “OFF.”

Own

station flag

(master

station)

Condition for flag operation

Other

station’s

flag

(01 to 77)

Flag

Condition for flag operation

Slave station stops operation (not by an error cause).

Specific

slave

station

All slave stations

Not specified

OFF

ON

Slave station is operating.

Communication monitor flag (1) of the master
station is turned “OFF.”

Slave station that communication monitor flag (1)
is turned to “OFF.”

Flag operation

ON

OFF

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